Packaging

Package | PIN:

Temp:

ECO Plan:

UCC2809D-1

TI Store Price:

Qty.

Price

1 - 9

$ 2.75

10 - 24

$ 2.48

25 - 99

$ 2.26

100 - 249

$ 2.04

250 - 499

$ 1.84

500 - 749

$ 1.55

750 - 999

$ 1.31

1000 - 9999

$ 1.10

Adjust your quantity during checkout

Texas Instruments UCC2809D-1

The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.

Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.

The family has UVLO thresholds and hysteresis levels for off-line and DC-to-DC systems as shown in the table to the left.

The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP (N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and MSOP packages make the device ideal for applications where board space and height are at a premium.